[Correction: An earlier version of this story listed Symantec Mobile Security, the company's enterprise solution, as one of the products tested. AV-Test in fact tested Norton Mobile Security, the consumer product.]

All 30 products were tested in July, 2013 on Android 4.2.2. The products scanned 1972 malware samples. 7 of the products detected 100% of the samples. 16 more detected 98% or better. The real problems came for these products:

AegisLab Antivirus Premium 63.6%

Bornaria Mobile Security 84.6%

SPAMfighter VIRUSfighter Android 68.0%

Zoner Mobile Security 63.6%

The average detection rate for all products was 95.2% and the median was 99.2%

AV-Test checked for 3 broadly-defined performance metrics:

The app does not impact the battery life

The app does not slow down the device during normal usage

The app does not generate too much traffic

Early versions of Android anti-malware got a bad reputation on all 3 fronts, but — surprisingly — the only negative mark was on Norton Mobile Security for generating too much traffic.

The comparison also checks the products for certain features:

Anti-Theft (Remote-Lock / Remote-Wipe / Locate): Locate, Lock or Wipe your device when it is lost or stolen